2. Stallion
Based on the Pontiac GTO. Not the most elegant car on the game, but the inclusion of the Stallion indicates that Rockstar haven't forgotten their roots. This specific vehicle has been in every GTA game since its birth and long may that continue. It's more than just a filler car, its a symbol. Of course, it has been blessed with a touch up on graphics from it's debut in the franchise when it looked like a block of cheese. It has also made cameo appearances in Rockstar's highly controversial game Manhunt as well as The Warriors. This car also maximised the 'swing glitch' to its potential, so who knows, if something similar were to crop up in GTA V, I know what I'll be on the look out for. Because of the symbolism and cameos, it renders this car as awesome.